body {
            font-family: 'Poppins', sans-serif;
            background: url('../../images/lian.jpg') no-repeat center center fixed;
            background-size: cover;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0;
            padding: 20px;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.6));
            backdrop-filter: blur(8px);
            z-index: 0;
        }

        .signup-container {
            position: relative;
            z-index: 1;
            width: 100%;
            max-width: 900px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.3);
            display: flex;
            backdrop-filter: blur(10px);
        }

        .signup-left {
            flex: 1;
            background: linear-gradient(135deg, rgba(33, 150, 243, 0.95), rgba(33, 150, 243, 0.85));
            padding: 40px;
            color: white;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            position: relative;
        }

        .signup-right {
            flex: 1;
            padding: 40px;
            background: white;
        }

        .back-btn {
            position: absolute;
            top: 20px;
            left: 20px;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            z-index: 10;
            padding: 8px 12px;
            border-radius: 8px;
            background: rgba(0, 0, 0, 0.2);
            backdrop-filter: blur(4px);
            transition: all 0.3s ease;
        }

        .back-btn:hover {
            background: rgba(0, 0, 0, 0.3);
            color: #fff;
            transform: translateX(-3px);
        }

        .logo-img {
            width: 150px;
            height: 150px;
            object-fit: contain;
            margin-bottom: 20px;
            border-radius: 60%;
            background: white;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }

        .brand-name {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .brand-description {
            font-size: 14px;
            opacity: 0.9;
            line-height: 1.6;
        }

        .signup-header {
            margin-bottom: 30px;
        }

        .signup-header h1 {
            font-size: 28px;
            margin-bottom: 8px;
            color: #333;
        }

        .signup-header p {
            color: #666;
            font-size: 15px;
        }

        .form-floating {
            margin-bottom: 20px;
        }

        .form-floating .form-control {
            border-radius: 8px;
            border: 1.5px solid #e0e0e0;
            padding: 12px 16px 0;
            height: 50px;
            font-size: 15px;
            transition: all 0.2s ease;
        }

        .form-floating .form-control:focus {
            border-color: #2196F3;
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
        }

        .form-floating label {
            padding: 12px 16px;
            color: #666;
        }

        .password-wrapper {
            position: relative;
        }

        .password-toggle {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #666;
            cursor: pointer;
            z-index: 10;
            padding: 0;
        }

        .password-toggle:hover {
            color: #2196F3;
        }

        .form-check {
            margin: 20px 0;
        }

        .form-check-label {
            font-size: 14px;
            color: #666;
        }

        .form-check-input:checked {
            background-color: #2196F3;
            border-color: #2196F3;
        }

        .signup-btn {
            width: 100%;
            height: 48px;
            background: #2196F3;
            border: none;
            border-radius: 8px;
            color: white;
            font-size: 16px;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.2s ease;
        }

        .signup-btn:hover {
            background: #1976D2;
            transform: translateY(-1px);
        }

        .signup-btn:active {
            transform: translateY(0);
        }

        .login-link {
            color: #2196F3;
            text-decoration: none;
            font-weight: 500;
        }

        .login-link:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .signup-left {
                display: none;
            }
            
            .signup-container {
                max-width: 400px;
                background: rgba(255, 255, 255, 0.98);
            }

            .signup-right {
                padding: 30px;
                position: relative;
            }

            .back-btn {
                color: #2196F3;
                background: rgba(33, 150, 243, 0.1);
            }

            .back-btn:hover {
                background: rgba(33, 150, 243, 0.2);
                color:
                 #2196F3;
            }
            
        }

        /* Loading Screen Styles */
        .loading-screen {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(5px);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            transition: opacity 0.1s ease;
        }

        .loading-screen.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .loading-logo {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            margin-bottom: 0.8rem;
            animation: pulse 0.5s infinite;
        }

        .loading-text {
            color: white;
            font-size: 0.9rem;
            margin-bottom: 0.6rem;
            font-weight: 500;
        }

        .loading-dots {
            display: flex;
            gap: 0.2rem;
        }

        .loading-dot {
            width: 6px;
            height: 6px;
            background: white;
            border-radius: 50%;
            animation: bounce 0.4s infinite ease-in-out;
        }

        .loading-dot:nth-child(1) {
            animation-delay: -0.12s;
        }

        .loading-dot:nth-child(2) {
            animation-delay: -0.06s;
        }

        @keyframes bounce {
            0%, 80%, 100% { 
                transform: scale(0);
            }
            40% { 
                transform: scale(1);
            }
        }

        @keyframes pulse {
            0% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.02);
                opacity: 0.98;
            }
            100% {
                transform: scale(1);
                opacity: 1;
            }
        }